Esfuerzo y decremento de vigilancia en tareas de discriminación sucesiva y simultánea

Resumen

El objetivo del experimento presentado en este artículo fue probar la hipótesis de que el decremento de sensibilidad en tareas de atención sostenida, ocurre porque los recursos atencionales o esfuerzo que demanda la tarea no pueden matenerse durante un tiempo prolongado. Comparamos dos tareas que diferían en carga de memoria y registramos tres grupos de índices de esfuerzo o gasto atencional: rendimiento en una tarea secundaria concurrente, esfuerzo subjetivo y actividad cardiovascular (IBI medio y amplitud espectral del componente 0.10 Hz). En ambas tareas observamos un declive significativo a lo largo del tiempo en eficiencia o ritmo de procesamiento, indicado por la razón entre la precisión y la velocidad. Los datos acerca del esfuerzo subjetivo y el rendimiento en la tarea secundaria no parecen apoyar la hipótesis original. El principal hallazgo fue que la actividad cardiovascular al comienzo de la tarea, medida por la amplitud del componente 0.1 Hz, era un predictor significativo del decremento de eficiencia en ambas tareas de vigilancia. Si esta amplitud es un índice fisiológico fiable de atención, nuestro resultado sugiere que un procesamiento controlado, con esfuerzo, al comienzo de la tarea previene el decremento de vigilancia.     

Comunicación simultánea: un modelo para enfrentar los déficit lingüísticos del niño autista

Resumen

El empleo de procedimientos de comunicación simultánea, en el tratamiento de los niños autistas, es una de las vías más prometedoras para incrementar la competencia comunicativa de estos niños. En este articulo se revisan los resultados del tratamiento de dos niños autistas con métodos de comunicación simultánea y las implicaciones de este método para el tratamiento de los niños autistas.     

Understanding Hope. Persons in the Process of Dying

Changes both within the profession of psychoanalysis and in society as a whole have affected our psychoanalytic training programs and presented new ethical challenges. Whereas in earlier decades training programs needed to be concerned primarily about the inviolability of the training analysis and the choice of appropriate analytic candidates, today there is little support for psychoanalysis as a treatment modality. Institutes are experiencing greater competition in attracting quality candidates and in providing them with adequate training experiences. This strain encourages institutes to operate in unethical ways to attract candidates. On the other hand, within the profession itself we are experiencing much theoretical ferment and the increasing feminization of the profession. These changes are affecting our training institutes and our ethical values in both positive and negative ways.     

Performance in Autobiographical Memory of Older Adults with Depression Symptoms

The aim of this study was to compare the performance in the Autobiographical Memory Test in older adults with high scores on depression symptoms (HDS) compared with a matched group with low scores on depression symptoms (LDS) according to the clinical cut‐off of the Centre for Epidemiological Studies Depression Scale. Participants were asked to generate specific autobiographical memories in response to a series of positive and negative cue words. Latencies of responses for each item were also scored. LDS participants showed a higher proportion of specific memories than HDS participants. Latencies of responses to positive and negative cues were greater for HDS than LDS. Specific autobiographical memory was positively associated with Life Satisfaction. Cognitive emotional changes in the function of memory with age are suggested as a possible explanation for the findings. Copyright © 2012 John Wiley & Sons, Ltd.     

Contribution of parents' adult attachment and separation attitudes to parent‐adolescent conflict resolution

This study examined the contribution to parent‐adolescent conflict resolution of parental adult attachment styles and attitudes toward adolescent separation. Questionnaires were completed by 295 couples with early to late adolescent children. Structural equation models were used to test self and partner influences on conflict resolution for three attachment orientations: confidence (model A), anxiety (model B) and avoidance (model C). Model A showed self influences between parents' confidence orientation and negotiation and also via positive attitudes towards separation. Also, the fathers' use of negotiation was facilitated by the mothers' confidence orientation and vice versa, indicating partner influences as well. Model B showed self influences between parents' anxiety orientation and the use of dominance and withdrawal and also via negative attitudes towards separation. Model C showed self influences between parents' avoidance orientation and dominance and withdrawal, and a partner influence between fathers' avoidance and mothers' use of dominance. The results indicated that the parents' adult attachment system and the parenting system were related in the area of conflict resolution, and that self influences were stronger than partner influences.     

Some Normal Extensions of K4.3

This paper proves the finite model property and the finite axiomatizability of a class of normal modal logics extending K4.3. The frames for these logics are those for K4.3, in each of which every point has a bounded number of irreflexive successors if it is after an infinite ascending chain of (not necessarily distinct) points.     

Race,Immorality and Money in the American Baha'i Community: Impeaching the Los Angeles Spiritual Assembly

This article analyses the dissolution of the Baha'i local assembly of Los Angeles in 1986–88 by the National Assembly. Official explanations for this move focused on lapses in morality and administrative discipline, but local interviewees, as well as some official pronouncements, suggest that the conflict had two roots: the globalisation of the community and resultant ethnic conflict among whites, African–Americans and newly immigrant Iranians; and national/local conflicts over power and money. Low-information elections, the unaccountability of elected officials, censorship and difficulties in acknowledging social conflict were the causes of these episodes in the Baha'i religion.     

Bertrand Russell and the introduction of mathematical logic in China

Bertrand Russell was one of the most prominent figures in the formation and development of mathematical logic. It is widely acknowledged that his work in this field exerted tremendous influence in the West, especially in the first three decades of the twentieth century. The important role he played in inspiring Chinese interest in this subject, however, is virtually unknown. This paper describes Russell's contributions to the introduction of mathematical logic in China through a discussion of his lectures in Beijing in March of 1921, and the subsequent Chinese translations of his Introduction to Mathematical Philosophy and Principia Mathematica.     

Multiple phase transitions in CuO

Electrical resistivity, thermoelectric power, magnetic susceptibility and calorimetric measurements were carried out on a single crystal of CuO. In addition the two known antiferromagnetic transitions between 210K and 230K, a new phase transition around 160K was found in CuO. The experimental results show that this new transition is related to changes in the electronic state of CuO.